Temat: delamination force - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Modelowanie belki zespolonej
Methods of modeling offsets based on composite beam example
Autorzy:: Popiel, A.
Rowiński, S.
Powiązania:: https://bibliotekanauki.pl/articles/129208.pdf
Data publikacji:: 2017
Wydawca:: PWB MEDIA Zdziebłowski
Tematy:: belka stalowo-betonowa
konstrukcja zespolona
modelowanie
siła rozwarstwiająca
przesunięcie
steel-concrete beam
composite structure
modelling
delamination force
offset
Opis:: Methods of modeling offsets is presented. Calculations are based on example of composite concrete-steel beam. Design principia, diagrams of inner forces, examples of other application offsets are reported in the paper.
Źródło:: Builder; 2017, 21, 12; 62-65
1896-0642
Pojawia się w:: Builder
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Surface integrity of machined surface in simultaneous cutting of CFRP
Autorzy:: Shimana, Kenji
Kawano, Ryota
Harada, Masakazu
Yoshimitsu, Shinichi
Kobaru, Yuya
Kondo, Eiji
Powiązania:: https://bibliotekanauki.pl/articles/99424.pdf
Data publikacji:: 2020
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: CFRP
thrust force
simultaneous cutting
delamination
Opis:: Carbon fiber-reinforced plastic (CFRP), a carbon fiber composite material, has high specific strength and stiffness, and has attracted attention as a structural material for transport machines from the viewpoint of improving fuel efficiency through weight reduction. However, the exiting CFRP processing methods have several disadvantages such as high cost, tool wear due to formation of hard chips during cutting, and occurrence of delamination that degrades machining accuracy. These limitations impede the practical application of CFRP. The purpose of this study is to propose a low cost and high precision drilling method “simultaneous cutting” by stacking the different materials with CFRP. Until now, high precision hole drilling has been studied by stacking titanium on CFRP. Because CFRP and titanium parts are joined by bolts in aircraft and so on. However, in this study, an inexpensive and easy to obtain acrylic resin plate was selected as a stacking material to focus on CFRP hole drilling. On the other hand, acrylic resin plate was used for CFRP hole drilling as a waste material. As a result, it was found that the thrust force was reduced by drilling the hole with stacking CFRP between two acrylic resin plates. Furthermore, the occurrence of delamination was suppressed at both the entry and exit sides of the hole.
Źródło:: Journal of Machine Engineering; 2020, 20, 1; 98-106
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Effect of Composite Material Fixing on Hole Accuracy and Defects During Drilling
Autorzy:: Ciecieląg, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/2123286.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: drilling
delamination
carbon fiber reinforced plastics
glass fiber-reinforced plastics
feed force
Opis:: This study investigates the effect of composite material stiffness on the accuracy of drilled holes and delamination in the drilling process. Two types of composite materials were tested: glass fiber reinforced plastic (GFRP) and carbon fiber reinforced plastic (CFRP). The drilling process was performed using dedicated drill bits. Samples were clamped in a vice of the Avia-VMC 800 HS vertical machining center. Drilling parameters were maintained constant but unsupported element length was changed. The unsupported element length was defined as an unsupported distance between the drilled hole axis and the sample attachment location. The maximum feed force Ff was determined in the experiments. The accuracy of drilled holes was estimated by optical microscopy. Diameters of the drilled holes were measured. Results made it possible to determine the recommended unsupported element length at which the hole dimensions were within the dimensional tolerance. The study showed a clear decrease in the drilled hole quality and a significant increase in the feed force, especially in the area of tool exit from the workpiece. In addition, the number of delaminated fibers increased with unsupported element length was determined in the study.
Źródło:: Advances in Science and Technology. Research Journal; 2021, 15, 3; 54--65
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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